As for the rest of the acts of Josiah and his deeds of loving devotion according to what is written in the Law of the LORD—
It was thirteen years from Josiah's famous passover to his death. During this time, we may hope, thing went well in his kingdom, that he prospered, and religion flourished; yet we are not entertained with the pleasing account of those years, but they are passed over in silence, because the people, for all this, were not turned from the love of their sins nor God...
Commenting on 2 Chronicles 35:20-27
2Ch 35:25-27 The death of the pious king was deeply lamented by his people. The prophet Jeremiah composed a lamentation for Josiah: “and all the singing-men and singing-women spake in their lamentations of Josiah unto this day;” i.e., in the lamentation which they were wont to sing on certain fixed days, they sung also the lamentation for Josiah.
Commenting on 2 Chronicles 35:25-27